It’s a piece from D50 TTB beam, it's the “cover” portion from a Heavy duty F-250, it WILL fit all D44s. It needs the edges trimmed off, would be a 5minute job with a plasma, maybe a ½ hour with a sawzall. I believe it’s a ¼” thick, might even be 3/8”.

Has an fill plug on cover to boot.

I was going to use this for a project I no longer have, should make someone very happy.

$20

My guess is it’s every bit as strong, or stronger as any aftermarket diff cover.